1280985

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 32

約数和(自身を含む): 2211840

約数和(自身を除く): 930855

約数列:

[1, 3, 5, 15, 23, 47, 69, 79, 115, 141, 235, 237, 345, 395, 705, 1081, 1185, 1817, 3243, 3713, 5405, 5451, 9085, 11139, 16215, 18565, 27255, 55695, 85399, 256197, 426995, 1280985]

約数ペア:

[(1, 1280985), (3, 426995), (5, 256197), (15, 85399), (23, 55695), (47, 27255), (69, 18565), (79, 16215), (115, 11139), (141, 9085), (235, 5451), (237, 5405), (345, 3713), (395, 3243), (705, 1817), (1081, 1185)]